By definition, the determinant equals ad - bc. What is the value of when x = -2 and y = 3? I NEED HELP PLEASE

By Definition, The Determinant Equals Ad - Bc. What Is The Value Of When X = -2 And Y = 3? I NEED HELP

Answers

Answer 1

Answer:

B. -84

Step-by-step explanation:

Taking the determinant of the matrices we will have;

= 4x(5y) - 2x(3y)

= 20xy - 6xy

= 14xy

Given x = -2 and y = 3

Determinant = 14(-2)(3)

Determinant = -28*3

Determinant = -84


Related Questions

In one town, 47% of all voters are Democrats. If three
voters are randomly selected for a survey, what is the
probability that they are all Democrats?

Answers

Answer:

The  probability that the all three votes are  Democrats

P(X=3) = 0.1038

Step-by-step explanation:

Step(i):-

Given that the all voters are democrats

The probability that the all voters are democrats

p = 47% =0.47

q = 1-p =1-0.47 = 0.53

Step(ii):-

Let 'X' be the random variable in binomial distribution

[tex]P(X=r) = n_{C_{r} } p^{r} q^{n-r}[/tex]

The  probability that the all three votes are  Democrats

P(X=3) = 0.1038

n=3 and r=3

[tex]P(X=3) = 3_{C_{3} } (0.47)^{3} (0.53)^{3-3}[/tex]

[tex]P(X=3) = 1 (0.47)^{3}[/tex]

P(X=3) = 0.1038

Final answer:-

The  probability that the all three votes are  Democrats

P(X=3) = 0.1038

Brian walk 1 1/4 miles in 5/12 hour. What is Brian's unit rate?

Answers

Answer:

3 miles per hour

Tyree wants to know if the value of -1 3/4, raised to the 12th power is a positive or negative number

Answers

9514 1404 393

Answer:

  positive

Step-by-step explanation:

The exponent 12 tells you how many times (-1 3/4) is a factor in the product. The number 12 is even, so there will be an even number of minus signs in the product. That results in a positive product.

__

The value is ...

  825.005006849765777587809625

Points C, A, and Bare collinear
How many labeled points are between points A and D?
zero
one
two
an infinite number

Answers

I think it’s zero, c is too far in the left and b lies below the two

Kiran’s backpack weighs 3 pounds less than Clare’s backpack. Clare’s backpack weighs 14 pounds. How much does Kiran’s backpack weigh?

Answers

14-3=11, The answer is 11

Answer:

well I have this question too if you are doing amplify math so I got the soulutions x+3=14 and x=14-3.

Step-by-step explanation:

And for the x= part its x=11

Find a solution to the linear equation y=-4x+36 by filling in the boxes with a valid value of x and y

Answers

Answer:

23

Step-by-step explanation

grief

tail

abridge

train

remind

habitat

gate

appointment

afford

stream

cheat

reckless

mixture

favorable

cultivate

horizon

please

garbage

show

headquarters

Calculator
What is the value of x?
8 in.
15 in.
Enter your answer in the box.
5 in
X=
in.

Answers

Answer:

x = 24 in

Step-by-step explanation:

The corresponding  sides of similar triangle will be in same proportion.

[tex]\frac{x}{8}=\frac{15}{5}\\\\\frac{x}{8}=3\\\\x = 3*8\\x = 24[/tex]

Step-by-step explanation:

x/15 = 8/5

x = 15 * 8 / 5

x = 24

answer

x = 24 in

Xei uses a tip calculator to figure his tips, but he thinks it is not working accurately. The tip calculator says that a $7 tip is necessary for a $75 meal at a 15% tip rate. Is the calculator working correctly? How do you know?

Answers

A 10% tip would be $7.50, so a$7 tip is too little

Answer:

a $7 tip is too little

Step-by-step explanation:

Helppppppp pleaseee I’m confused

Answers

Answer:

I guess u turn it into fraction from i think

You turn 7/55 into a decimal to get your answer

What is the area,in square yards of the rectangle shown down below 12yd 15yd Answer choices are 225,54,180,27

Answers

Answer:

area of rectangle =length ×width

area of rectangle=12yd×15yd

area of rectangle=180yd²

A=lw
So 12*15=180

The answer is c

Solve the right triangle.
Round your answers to the nearest tenth.


Answers

Answer:

b= 16.6

B= 46 degrees

c= 23

Step-by-step explanation:

at total of 2 feet of snow falls over three days on the first day 1/6 of the snow falls on the second day 7/12 of the snow falls




PLZZ HELPP

Answers

Answer:

[tex]Day\ 3 = 1\frac{3}{12}[/tex]

Step-by-step explanation:

Given

[tex]Total = 2ft[/tex]

[tex]Day\ 1 = \frac{1}{6}[/tex]

[tex]Day\ 2 = \frac{7}{12}[/tex]

Required

Determine the amount of snow on day 3

This can be calculated using:

[tex]Day\ 1 + Day\ 2 + Day\ 3 = Total[/tex]

Substitute values for the known parameters

[tex]\frac{1}{6} + \frac{7}{12} + Day\ 3 = 2[/tex]

Collect Like Terms

[tex]Day\ 3 = 2 - \frac{1}{6} - \frac{7}{12}[/tex]

Take LCM

[tex]Day\ 3 = \frac{24 - 2 - 7}{12}[/tex]

[tex]Day\ 3 = \frac{15}{12}[/tex]

Express as mixed number

[tex]Day\ 3 = 1\frac{3}{12}[/tex]

Please answe number 1 PLEASE

Answers

Answer:

i believe the answers D

Step-by-step explanation:

Answer:

i think its B

Step-by-step explanation:

+
2
8
2
Least multiple that is the sam
Add using renamed fractions

Answers

Answer:

no

Step-by-step explanation:

solve and graph 3t - 12 < -9

Answers

Answer:

x = anything lower than 1

Step-by-step explanation:

x < 1

The constraint of inequality 3t - 12 < -9 is t < 1 and has been plotted on a number line.

What is inequality?

A mathematical phrase in which the sides are not equal is referred to as being unequal. In essence, a comparison of any two values reveals whether one is less than, larger than, or equal to the value on the opposite side of the equation.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

Given the inequality

3t - 12 < -9

Add 12 on both sides

3t - 12 + 12 < -9 + 12

3t < 3

Divide by 3 into both sides

t < 1

Hence "The constraint of inequality 3t - 12 < -9 is t < 1".

For more about inequality,

brainly.com/question/20383699

#SPJ2

50 POINTS!!!!!!! WILL GET BRAINLIEST IF CORRECT!!!!!

Answers

Answer:

43

Step-by-step explanation:

Which statement best describes the function below? f(x)=2x^3+2x^3-x​

Answers

Answer:

A

Step-by-step explanation:

It is a one-to-onw function

Select the correct answer.
The length of a rectangle is units greater than its width. If the width is w, which expression gives the perimeter of the rectangle in terms of its width?
A.
4w + 3
B.
w – 3
C.
5w
D.
6w + 4

Answers

Answer:

hope it helps

Step-by-step explanation:

A student in eighth grade notices that the current cost of of tuition, books, and fees at a 4 year college is $16,000 per year. The family reads that there is an annual increase of $450 per year.

What will the the total cost of tuition, books, and fees for this student when this student attends college for four years, after graduating high school?


$73,700

$75,700

$77,100

$78,900

Answers

Answer: It's  (B)  $75,700

whats the largest number that can round to 440000?

Answers

Answer:

439999.999999999999999

Step-by-step explanation:

given f(x) = 1/4 (5-x)^2 what is the value of f(11)

Answers

Answer:

9

Step-by-step explanation:

f(11) means that x = 11 (plug it in)

f(11) = 1/4(5-11)^2

      = 9

The value of f(11) is 9.

The function of a given term is a form of an expression where element of the domain consists of a unique identity and each input value of a function is allocated to only one output value.

From the parameters given;

[tex]\mathbf{f(x) = \dfrac{1}{4}(5 - x)^2}[/tex]

we are to replace x with 11 wherever we see x

[tex]\mathbf{f(11) = \dfrac{1}{4}(5 - 11)^2}[/tex]

[tex]\mathbf{f(11) = \dfrac{1}{4}(-6)^2}[/tex]

[tex]\mathbf{f(11) = \dfrac{1}{4} \times 36}[/tex]

f(11) = 9

Learn more about a function a term here:

https://brainly.com/question/10283950

Help please due today!!!

Answers

Answer:

C

Step-by-step explanation:

Ivy says:

f(1) = -100

f(n) = -100 + 50( n - 1 )f(1) = -100 + 50( 1 - 1 )f(n) = -100 + 50(0 ) anything times 0 is 0!f(1) = -100

You do that with the other numbers in the sequence. 2 = -50, 3 = 0 and so on

When you to n as 1, 2, and 3 they seem to all check out. So Ivy is right!

Andrey says:

f(1) = -100f(1)= -150 +50(1)f(1) = -150 + 50f(1) = -100

That's a little suspicious don't you think that both answers are right..

Essentially they are both the same equation!

So let's simplify Ivy's equation!

f(n) = -100 + 50( n - 1 )

f(n) = -100 + 50n - 50

f(n)= -150 +50n

Which is basically Andrey's equation and they both seem to be right for the sequence! So both of them are right!

a coach on a motorway is travelling at a constant speed . in ten minutes it travels 16 kilometer

work out its travells

20 minutes
please answer

30 minutes

50 minutes

1 hour

Answers

Step-by-step explanation:

10 minutes= 16km

20 minutes= 16x2 = 32km

30 minutes= 16x3 = 48km

50 minutes= 16x5 = 80km

60 minutes = 16x6 = 96km

I hope this helps, have a great day! :) -wilzW

Please provide with an explanation to get brainiest

Answers

D is the correct answer because a true proportion is a proportion that has to be equal to one another. 9 goes into 45 five times and 20 goes into 100 five times therefore the fractions are equal.

Yep brainliest if correct

Answers

it d
2197
hope that helps

9514 1404 393

Answer:

  B)  -125

Step-by-step explanation:

Put the numbers where the variables are and do the arithmetic.

  (a^2 -b^2)^3

  = (2^2 -(-3)^2)^3

  = (4 -9)^3

  = (-5)^3

  = -125 . . . . . matches choice B

HELP HELP PLEASE IM BEGGING YOU HELP!

Answers

Answer:

22 * n + 4

Step-by-step explanation:

Coach Kay has assets that total $22,500 and liabilities that total $48,000. What is Coach Kay's net worth?

Answers

Answer:

70,500

Step-by-step explanation:

Add 22,500 and 48,000

The answer is 70,500

Diana is painting a circular mural on her wall.
Her mural is going to have a diameter of 7
feet. How much wall space will she be
painting?

Answers

Answer:

3.5 hope I help you that's the answer

х2 - 6х + 40 = (х + 5

Answers

x^2 - 6x + 40 = x + 5

Solution for quadratic equation

Subtract 40 from both sides.

x^2 - 6x + 40 - 40 = x + 5 - 40

= x^2 - 6x = x - 35

Subtract x from both sides.

x^2 - 6x - x = x - 35 - x

= x^2 - 7x = -35

Rewrite the equation in the form
(x + a)^2 = b

(x - 7/2)^2 = - 91/4

Answer

x = 7/2 + sqroot 91/2,
x = 7/2 - sqroot 91/2

Solution to simplify

Group like terms

x^2 - 6x + 40 = x + 5
x^2 - 6x - x = 5 - 40
x^2 - 7 = -35

find the tax sales on item divide the price of the item by 20 write an algebraic expression to find the sales tax on an item that cost three dollars find the sales tax on a television that cost $800

Answers

Answer:

Step-by-step explanation:

tax = 1/20 of price

1/20 of $3 = 1/20 × 3 = 3/20 = $0.15

1/20 of $800 =  1/20 × 800 = $40

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